Spring suspension for a baby carriage body



March 9, 1937. H. D. SCHWARZBAUMET AL v 2,073,497

SPRING SUSPENSION FOR A BABY CARRIAGE BODY Filed Aug. 8, 1956 2 Sheets-Sheet 1 ATTORNEY."-

March 9, 1937. H; D. SCHWARZBAUM ET AL 2,073,497

SPRING SUSPENSION FOR A BABY CARRIAGE BODY Filed Aug. 8, 1936 2 Shets-Sheet 2 a as 2: 2a iii 2 EF- 'HHIIIHEH '55; 13; |||H||| IQ,

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2i q I8 [In-5:51! Hifli Patented Mar. 9, 1937 UNITED STATES PATENT OFFICE SPRING SUSPENSION FOR A BABY CAR.-

RIAGE BODY Elias Specter Application'August 8, 1936, Serial No. 94,980

7 Claims.

Our invention relates to an improvement in-a gear or spring suspension for a baby carriage body and its novelty consists in the arrangement and adaptation of parts .as willbe more ful- 5 1y hereinafter pointed out.

It has been a real problem for many years to find a gear orspring suspension for suspending a-baby carriage body-on the chassis in a manner that will insure ease in operation and long 10 life to the combined carriage and chassis.

Our novel spring suspension :insures complete ease in the movement of the carriage in any and every direction as the baby jumps around therein or in passing over rough ground and also 15 prevents too much or too rapid movement thereby insuring easy going steadiness to the motion of the carriage. Said spring construction also permits a closer setting of the body and wheels and a narrower carriage for enteringnarrow 2O doorways. Referring to the drawings Figure 1 is a side elevation of a baby carriage embodying our device and with the upper part of the body broken away for convenience inillustration and the axles cut so as to eliminate the near 25 wheels and gearing and show the remainder more clearly.

Figure 2 is a bottom plan view of the gear and carriage with ends of the-body brokenaway for convenience in illustration. 7 I

30 Figure 3 is a-detaiLof-one end of the-gearing.

Figure 4 is the same as Figure 3 looking in from the lefthand side.

Figure 5 is a single shackle plate.

Figure 6 is the rubber cylinder used over the 35 bolts of the shackle.

In the drawings I is a baby carriage body having the usual handle II and being supported on a pair of members I2 which are rigidly secured to the bottom of said body I0 along either 40 longitudinal side by bolts I3. Said members I2 have a large outwardly and downwardly turned circular spring portion I4 near each end which terminate at their ends in shackle suspending circular ends I5. A second pair 01' members I6 45 are rigidly secured to axles I! by bolts I8 and said members I6 have a small downwardly turned circular portion I9 near each end which terminate at their ends in shackle suspending circular ends 20.

50 The adjacent circular ends I and 20 are secured together by means of shackles having side plates 2I with holes 22 which are sufi'iciently larger circularly or elliptically than rivets 23 to permit of some movement of said rivets 23 in 55 said holes 22. A rubber cylinder 24 is mounted oversaid rivets 23-and metal spacer members 25 are mounted over said rivets 23 adjacent each end of the rubber cylinder 24. Also there are metal Washers 26 between the plates 2| and the head ends 'of-rivets'=23, so that the contacting 5 wearing portions of said shackles are metal and the ends I5 and 20 of the springs I6 hook over andrest and have more movement on the rubber cylinders 24;

'Wheels 21 are mounted on each end of the axl'esl-l in the usual way. Also a reinforcing bar :28 is rigidly secured to the central part of each of the axles II at'29.

In operation the spring portionsl9 terminating'in shackle suspending circular ends 20 serve as pivots-and furnish a free movement to the spring portion I4 through the free swing of the shackles as'connected to the shackle supports I5. In this .way, because of the movement of the shackles-as pivoted in the circular ends 20 with t'he free ends I5, the spring portions I4 0; members I2 are enabled to flex more easily but less violentlywith actually more movement as the "free ends I 5 swing'with the movement of the shackles pivoted at 20.

This connection of the spring portions I4 and I9 'bymeans of the'shacklesat the shackle supporting ends 15 and 20 also permits of side motion'as the ends I5 and20 are mounted over the rubber cylinder-24 and the rivets23 have a lee- 30 way of movement-in al1 directions in the oversized circular 'or elliptical -holes '22 of the shackle plates 2 l. a

Therefore the structure of the spring portion I4 coming over and around the spring portions I9 and their ends being connected at their shackle supporting circular ends I5 and 20 by shackles as described, insures easy going and complete movement of the carriage body I0 supported thereon in any and every direction in- 40 eluding universal motion.

Also it is to be noted that practically all of the noise in the movement of the springs I4 and I9 and the shackles connecting same is eliminated because of the use of the cylindrical rubber members 24 over the rivets 23 of said shackles and also the contacting of the shackle supporting circular ends I5 and 20 around said cylindrical rubber members 24.

, We claim:

1. In a baby carriage a body, a pair of members rigidly secured to the same thereunder and supporting the same and having large downward circular spring portions at each end and terminating in shackle supports, a second pair of memtil bers rigidly secured to the axles of a chassis having smaller downturned circular spring portions at each end curving within said large circular members of said first pair of spring portions and terminating in shackle supports, and shackles having a pair of elliptical holed plates loosely fastened together for free play connecting each of said adjacent pairs of shackle supports so as to allow free shackle supports.

2. In a baby carriage a supporting the same and having large downturned circular spring portions at each end and terminating in shackle supports, a second pair of members rigidly secured to the axles of a chassis having smaller downturned circular spring portions at each end curving within said large circular members of said first pair of spring portions and terminating in shackle supports and shackle means connecting each of said adjacent pairs of shackle supports, so as to allow free universal movement of said shackle supports comprising shackles having a pair of plates riveted together, with some play and a rubber cylinder mounted over each of said rivets between said plates.

3. In a carrier a body, a pair of member rigidly secured to the same thereunder and sup porting the same and having large downturned circular spring portions at each end and terminating in shackle supporting members, a second pair of members rigidly secured to said body supporting base and having smaller downturned circular spring portions at each end curving within saidlarger circular members of said first pair of spring portions and terminating in shackle supports, shackles connecting each of said adjacent pairs of shackle supports and resilient means interposed between said shackles and supports so as to permit free quiet universal movement therebetween.

4. In a carrier a body, a pair of members each rigidly secured along the longitudinal edge of the bottom of said body and supporting the same universal movement of said.

a chassis and having downturned spring portions body, a pair of members rigidly secured to the same thereunder and swam supports so as to allow free universal movement of said shackle supports, comprising shackles having a pair of plates with circular oversized free play holes for rivets.

5. In a baby carriage a body, a pair of supporting members rigidly secured to the bottom of said body, large downturned outwardly curving circular spring portions at the ends of said members, a second pair of members rigidly secured to at each end curving within said first pair of spring portions and shackles connecting the adjacent ends of said two pairs of spring portions so as to allow free universal movement of said spring portions, comprising shackles having a pair of elliptical holed plates riveted together, and a rubber cylinder mounted over each of said rivets between said plates.

6. In a carrier a body, a pair of supporting members rigidly secured to the bottom of said body, large downwardly and outwardly curving circular spring portions near the ends of said members, a second pair of members rigidly secured to a body supporting base having spring portions curving within said first pair of spring portions and shackle means connecting the adjacent ends of said two pairs of spring portions so as to allow free universal movement of said spring ends comprising shackles having a pair of plates riveted together with free play and a rubber cylinder mounted over each of said rivets between said plates.

7, In aibaby carriage body, a pair of supporting members rigidly secured to the bottom of said bodyalong the longitudinal edges of the same, downwardly and outwardly curving circular spring portions near the ends of said members terminating in small circular shackle supporting members, a second pair of members rigidly secured to a chassis having spring portions curving within said first pair of spring portions and terminating at each end in a small circular shackle supporting member so as to permit free universal movement of said shackle supports, and comprising shackles connecting the adjacent ends of said two pairs of spring portions, said shackles being riveted together so as to permit some play and having rubber cylinders mounted over each of the rivets and over which said circular shackle supporting members are mounted.

HARTLEY D. SCHWARZBAUM. EDWARD C. KEYWORTI-I. 

